(fix) error thrown on discord service installed but not configured

Author: Lori3f6

src/main/java/cat/nyaa/ukit/show/ShowFunction.java

@@ -51,7 +51,6 @@ public boolean invokeCommand(CommandSender commandSender, Command command, Strin
         // fail-safe
         if (pluginInstance.config.showConfig.enableDiscordRelay) {
             EssentialsDiscordRelayUtils.broadCastMessageToChat(pluginInstance.config.showConfig.discordRelayPrefix + LegacyComponentSerializer.legacySection().serialize(message));
-
         }
         return true;
     }

src/main/java/cat/nyaa/ukit/utils/EssentialsDiscordRelayUtils.java

@@ -23,7 +23,7 @@ public static boolean isEnabled() {
     }
 
     public static void broadCastMessageToChat(String message) {
-        if (enabled) {
+        if (enabled && discordService != null) {
             discordService.sendMessage(MessageType.DefaultTypes.CHAT, message, false);
         }
     }